diff --git a/pkgs/development/libraries/ffmpeg-full/default.nix b/pkgs/development/libraries/ffmpeg-full/default.nix
index 2cfa4b1d3cd6..e0cd1227f7ea 100644
--- a/pkgs/development/libraries/ffmpeg-full/default.nix
+++ b/pkgs/development/libraries/ffmpeg-full/default.nix
@@ -95,6 +95,7 @@
 , libxcbxfixesExtlib ? true # X11 grabbing mouse rendering
 , libxcbshapeExtlib ? true # X11 grabbing shape rendering
 , libXv ? null # Xlib support
+, libXext ? null # Xlib support
 , lzma ? null # xz-utils
 , nvenc ? false, nvidia-video-sdk ? null, nv-codec-headers ? null # NVIDIA NVENC support
 , callPackage # needed for NVENC to access external ffmpeg nvidia headers
@@ -139,7 +140,7 @@
  *  Darwin frameworks
  */
 , Cocoa, CoreAudio, CoreServices, AVFoundation, MediaToolbox
-, VideoDecodeAcceleration, CF
+, VideoDecodeAcceleration, cf-private
 }:
 
 /* Maintainer notes:
@@ -230,11 +231,11 @@ assert nvenc -> nvidia-video-sdk != null && nonfreeLicensing;
 
 stdenv.mkDerivation rec {
   name = "ffmpeg-full-${version}";
-  version = "4.0.2";
+  version = "4.1";
 
   src = fetchurl {
     url = "https://www.ffmpeg.org/releases/ffmpeg-${version}.tar.xz";
-    sha256 = "15rgzcmdccy4flajs63gkz4n3k24wkkg50r13l1r83lrxg4hqp59";
+    sha256 = "150rrm549fy1x71c9whmyi5knyd9sliwvmcsm438bdgg4v8c93m3";
   };
 
   prePatch = ''
@@ -355,7 +356,7 @@ stdenv.mkDerivation rec {
     (enableFeature (libvorbis != null) "libvorbis")
     (enableFeature (libvpx != null) "libvpx")
     (enableFeature (libwebp != null) "libwebp")
-    (enableFeature (libX11 != null && libXv != null) "xlib")
+    (enableFeature (libX11 != null && libXv != null && libXext != null) "xlib")
     (enableFeature (libxcb != null) "libxcb")
     (enableFeature libxcbshmExtlib "libxcb-shm")
     (enableFeature libxcbxfixesExtlib "libxcb-xfixes")
@@ -408,7 +409,7 @@ stdenv.mkDerivation rec {
     bzip2 celt fontconfig freetype frei0r fribidi game-music-emu gnutls gsm
     libjack2 ladspaH lame libaom libass libbluray libbs2b libcaca libdc1394 libmodplug libmysofa
     libogg libopus libssh libtheora libvdpau libvorbis libvpx libwebp libX11
-    libxcb libXv lzma openal openjpeg libpulseaudio rtmpdump opencore-amr
+    libxcb libXv libXext lzma openal openjpeg libpulseaudio rtmpdump opencore-amr
     samba SDL2 soxr speex vid-stab vo-amrwbenc wavpack x264 x265 xavs xvidcore
     zeromq4 zlib
   ] ++ optional openglExtlib libGLU_combined
@@ -431,7 +432,7 @@ stdenv.mkDerivation rec {
     FILES+=($(ls $out/lib/*.dylib))
     for f in ''${FILES[@]}; do
       if [ ! -h "$f" ]; then
-        install_name_tool -change ${CF}/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation "$f"
+        install_name_tool -change ${cf-private}/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation "$f"
       fi
     done
   '';
diff --git a/pkgs/development/libraries/ffmpeg/3.4.nix b/pkgs/development/libraries/ffmpeg/3.4.nix
index b99c7240daec..f8343e668a67 100644
--- a/pkgs/development/libraries/ffmpeg/3.4.nix
+++ b/pkgs/development/libraries/ffmpeg/3.4.nix
@@ -6,7 +6,7 @@
 
 callPackage ./generic.nix (args // rec {
   version = "${branch}";
-  branch = "3.4.4";
-  sha256 = "0xmcijcpa7b59ws5ycmnp0a3pjmnpgly0zv8yff6if4p7pw7406f";
+  branch = "3.4.5";
+  sha256 = "0cbzysj9pskxh1kfdwmq2848fn6gi4pvh5y3insv10pdhpcjp8a3";
   darwinFrameworks = [ Cocoa CoreMedia ];
 })
diff --git a/pkgs/development/libraries/ffmpeg/4.nix b/pkgs/development/libraries/ffmpeg/4.nix
index b470d45ba43f..9821357de3b9 100644
--- a/pkgs/development/libraries/ffmpeg/4.nix
+++ b/pkgs/development/libraries/ffmpeg/4.nix
@@ -6,7 +6,7 @@
 
 callPackage ./generic.nix (args // rec {
   version = "${branch}";
-  branch = "4.0.2";
-  sha256 = "0mnh41j3kzi3x3clai1yhqasr1kc8zvd5cz0283pxhs2bxrm2v1l";
+  branch = "4.1";
+  sha256 = "19d16dhb4gx3akhbqd8844awx1axxli91bsjwsm4qp2a4i1zp15n";
   darwinFrameworks = [ Cocoa CoreMedia ];
 })
diff --git a/pkgs/development/libraries/libaom/default.nix b/pkgs/development/libraries/libaom/default.nix
index f6ff7e758956..c7d7bfb1e824 100644
--- a/pkgs/development/libraries/libaom/default.nix
+++ b/pkgs/development/libraries/libaom/default.nix
@@ -2,22 +2,18 @@
 
 stdenv.mkDerivation rec {
   name = "libaom-${version}";
-  version = "1.0.0";
+  version = "1.0.0-errata1";
 
   src = fetchgit {
     url = "https://aomedia.googlesource.com/aom";
     rev	= "v${version}";
-    sha256 = "07h2vhdiq7c3fqaz44rl4vja3dgryi6n7kwbwbj1rh485ski4j82";
+    sha256 = "090phh4jl9z6m2pwpfpwcjh6iyw0byngb2n112qxkg6a3gsaa62f";
   };
 
   nativeBuildInputs = [
     yasm perl cmake pkgconfig python3
   ];
 
-  cmakeFlags = [
-    "-DBUILD_SHARED_LIBS=ON"
-  ];
-
   preConfigure = ''
     # build uses `git describe` to set the build version
     cat > $NIX_BUILD_TOP/git << "EOF"
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 5a5b46ed862d..3d3b660fe4f3 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -9752,7 +9752,7 @@ in
     vid-stab = if stdenv.isDarwin then null else vid-stab;
     x265 = if stdenv.isDarwin then null else x265;
     xavs = if stdenv.isDarwin then null else xavs;
-    inherit (darwin) CF;
+    inherit (darwin) cf-private;
     inherit (darwin.apple_sdk.frameworks)
       Cocoa CoreServices CoreAudio AVFoundation MediaToolbox
       VideoDecodeAcceleration;